She could see him trying to come up with an explanation for what he had done.

She could no longer wait for him to come to her with an explanation.

The family received news of the death with no explanation at first.

Then, with no public explanation, the new season never happened.

During that time, a lot of things were done with no reason or explanation.

I'm going to have to come up with an explanation for him, when this is all over.

I can't come up with an explanation that makes more sense.

I couldn't come up with an explanation that made any sense to me.

We have to come up with an explanation of what killed her before she fell.

I hope that in six months' time, we will be able to provide it with an explanation.